# BlinkDocs vs Kas Genius

The clearest difference is in-app purchases: Kas Genius at none against BlinkDocs's 1. Kas Genius also leads on update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BlinkDocs sells 1 one-off in-app purchase. Kas Genius asks for nothing beyond the download.

BlinkDocs ships an update every 2 months, Kas Genius every 3 days. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | BlinkDocs | Kas Genius |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 99 MB | 37 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blink travel innovations private limited](https://appshunter.io/developer/1584618606) | [Tamay Erdogdu](https://appshunter.io/developer/1821402244) |

## What reviewers say

### BlinkDocs

[App page](https://appshunter.io/ios/app/blinkdocs/id1640192775)

Easily generate personalized cover letters and travel itineraries for visa applications. Answer a few questions and receive professionally formatted documents instantly. Supports unlimited corrections and easy copying for family members.

**Highlights:** Create cover letters in 5 minutes, Automatic translation to English, Unlimited corrections, Copy and edit for family, One payment for cover letter and itinerary, Excellent customer support

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Download Cover Letter | $4.99 | one-time |


### Kas Genius

[App page](https://appshunter.io/ios/app/kas-genius/id6762094901)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BlinkDocs free?

BlinkDocs is free to download, with in-app purchases available.

### Is Kas Genius free?

Kas Genius is free to download, with no in-app purchases.

### Do BlinkDocs or Kas Genius have ads?

Neither BlinkDocs nor Kas Genius shows ads.

### Which is updated more often, BlinkDocs or Kas Genius?

BlinkDocs ships an update every 2 months, and Kas Genius every 3 days. Most recently, BlinkDocs was updated on September 7, 2026 and Kas Genius on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*